Bicycle frame



FIG. 1 is a perspective view of a bicycle frame embodying the present invention.

FIG. 2 is a right side view of the design shown in FIG. 1.

FIG. 3 is a left side view of the design shown in FIG. 1.

FIG. 4 is a front view of the design shown in FIG. 1.

FIG. 5 is a rear view of the design shown in FIG. 1.

FIG. 6 is top view of the design of FIG. 1; and,

FIG. 7 is a bottom view of the design of FIG. 1.

The portions of the bicycle frame shown in broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for a bicycle frame, as shown and described. 